“Forced shopping” tours, which are outlawed but still continue, involve tour operators charging low prices but recouping the costs through commission paid to them by shops. In return, tourists are taken to the stores where they are expected to purchase items.

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The Hong Kong Tourist Board (HKTB) said in a statement: "The HKTB has zero tolerance for any act that impacts the hospitable image of Hong Kong, particularly acts of violence.”

This latest incident has seen many in mainland China call for a boycott of travel to Hong Kong.

Tensions have risen with the tourism boom, as mainlanders travelling to the country have been blamed for driving up prices.